Airtac LRM Miniature Linear Guide LRM12N1X220S10BPT
The AirTAC Airtac LRM Miniature Linear Guide LRM12N1X220S10BPT is a miniature linear guide on a 12 mm stainless-steel rail with recirculating-ball carriage. It is the small end of the range, for light-duty precision positioning in a tight envelope — compact stages, small pick-and-place heads and inspection fixtures.
- SeriesLRM
- Supplied asComplete guide set
- SizeLRM12
- Rail width12 mm
- Carriage lengthStandard carriage
- Carriages1
- Rail length220 mm
- AccuracyP — precision grade
- PreloadB — light preload
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac LRM Miniature Linear Guide LRM12N1X220S10BPT
LRM12N1X220S10BPT arrives as a complete matched assembly: a 220 mm stainless-steel rail 12 mm wide carrying one standard-length recirculating-ball carriage, pre-greased and ready to bolt down. The trailing T in the code fixes the rail as bottom-mount, so the screws are driven from below rather than across the rail's upper face - the answer when the top of the rail must stay clear over its full travel.
Because the ball-retention feature only assists rather than guarantees, angle the carriage onto the rail gently; the manufacturer warns that a hasty or skewed fit can still drop balls, and a dummy rail makes later swaps safer. Precision P accuracy is the tighter of the two grades offered on LRM, which matters when the 220 mm length doubles as a reference surface. Grease top-ups fall due every 100 km of travel or every 3 to 6 months, whichever comes first, and ambient temperature must stay at or below 80 C. The balls themselves are ISO 3290 G10 grade, Japanese made, chosen for roundness and wear life. Load and moment ratings are not published for LRM, so we confirm the figures for this exact model before you order - send the RFQ.
Airtac LRM Miniature Linear Guide LRM12N1X220S10BPT Technical Specifications
| Model | Airtac LRM Miniature Linear Guide LRM12N1X220S10BPT |
|---|---|
| Series | LRM Series Miniature Linear Guide |
| Supplied as | Complete guide set |
| Construction | Recirculating ball, stainless-steel rail, common-rail design |
| Size code | LRM12 |
| Rail width | 12 mm |
| Carriage length | Standard carriage |
| Carriages supplied | 1 |
| Rail length | 220 mm (spliced sections) |
| Load & moment ratings | Not published for this series — ask us to confirm for your model |
|---|---|
| Accuracy grade | P — precision grade |
| Preload grade | B — light preload |
| Mounting screws | M2 or M3 rail screws depending on size |
| Lubrication | Pre-filled with Kyodo Yushi PS No. 2; top up through the rear lubrication hole |
| Ambient temperature | Up to 80 °C ambient, 100 °C transient peak |
| Interchangeability | LRM carriages fit LRM rails of the same model |
Specifications follow the official AirTAC LRM catalogue. The catalogue does not publish load or moment ratings, running parallelism, speed limits, or carriage base material for LRM. We will not quote a figure we cannot source — ask us and we will confirm it for your model.
Model Code: Airtac LRM Miniature Linear Guide LRM12N1X220S10BPT
| LRM | LRM Series Miniature Linear Guide. |
|---|---|
| 12 | Size code. |
| N | Standard carriage. |
| 1X220 | 1 carriage on a 220 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| B | B — light preload — higher preload raises rigidity and tightens how flat the mounting surface must be. |
| P | P — precision grade. |
What Is In The Box
| This order | Complete guide set |
|---|---|
| Rail | Yes, 220 mm |
| Carriage | Yes, 1 |
Rail and carriage(s) supplied together, matched as a set. If you are not sure which form you need, send us the machine or the original part number and we will confirm it before you order.
Where the Airtac LRM Miniature Linear Guide LRM12N1X220S10BPT Is Used
Semiconductor die-inspection stage
A compact inspection stage traversing 220 mm across a wafer tray uses the precision P grade and an unobstructed rail top face for a low-profile bracket.
Laser alignment slide in a marking head
Bottom-mount fixing keeps screw heads off the running surface, so a focusing lens carrier sweeps the full 220 mm without fouling the beam path.
Automated pipetting deck axis
A laboratory liquid handler moving a light gantry along 220 mm benefits from free-running light preload, with re-greasing planned around the 100 km interval.
Is the Airtac LRM Miniature Linear Guide LRM12N1X220S10BPT the Right Guide?
At 12 mm rail width this is deliberately small; if the load is substantial or overhung, step up to LSH, which publishes dynamic, static and moment ratings per carriage so you can size on paper - LRM offers no such table, and we confirm LRM loads case by case. For very short travels where crossed-roller stiffness is the priority, LGC is the better match. Before committing, tick off: complete set or carriage only, 12 mm rail width, standard carriage, one carriage on a 220 mm rail, light preload B (easier running, a little more internal play), precision P accuracy, bottom-mount direction, and a confirmed load rating from us.
Quick checklist
- ✓ Complete set, carriage only, or rail only?
- ✓ Load and moment confirmed with us
- ✓ Travel length and mounting space
- ✓ Accuracy grade and preload
- ✓ Mounting surface ground or finish-milled
- ✓ Pairing code, if replacing a part
Installation & Maintenance Notes
- check Mounting surface must be ground or finish-milled.
- check Torque the rail screws per the recommended figures, in sequence.
- check Keep the mounting corner radius inside the stated R maximum.
- check Do not angle the carriage onto the rail; balls can drop out.
- check Drive the supplied bolt caps into the mounting holes.
- check Re-grease every 100 km of travel or every 3–6 months.
- check Installation by qualified personnel per AirTAC docs.
Airtac LRM Miniature Linear Guide LRM12N1X220S10BPT FAQ
This set is a 12 mm wide, 220 mm long stainless-steel rail with one standard carriage, light preload B, precision P accuracy, bottom-mount fixing and a 10 mm end-hole offset. M3 screws torque to 196 N.cm into steel, 127 N.cm into cast iron and 98 N.cm into aluminium. Ambient temperature must stay at or below 80 C with short peaks to 100 C, and re-greasing with the supplied Kyodo Yushi PS No. 2 is due every 100 km of travel or every 3 to 6 months. Load and moment ratings are not published for LRM - we confirm them for this model on request.
Yes - this code is a complete set, rail and carriage supplied assembled, not a separate carriage. Against LSH the difference is published data: LSH lists per-carriage dynamic, static and moment ratings you can size from, while LRM's are not published, so any design needing a calculated load margin should be sized in LSH first. For a compact 12 mm envelope where smoothness and fit drive the choice, this set is the lighter option, and we verify the load figure before dispatch.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac LRM Miniature Linear Guide LRM12N1X220S10BPT
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours. We can also confirm the load and moment rating for this model.